ptp_state.c

mtk 6225平台的usb程序！ 对想了解mtk平台usb的朋友会有帮助！

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/*****************************************************************************
 *
 * Filename:
 * ---------
 *   ptp_state.c
 *
 * Project:
 * --------
 *   Maui_Software
 *
 * Description:
 * ------------
 *  This file implements the PICTURE TRANSFER PROTOCOL state machine and related functions
 *
 * Author:
 * -------
 * -------
 *
 *============================================================================
 *             HISTORY
 * Below this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
 *------------------------------------------------------------------------------
 * removed!
 * removed!
 * removed!
 *
 * removed!
 * removed!
 * removed!
 *
 * removed!
 * removed!
 * removed!
 *
 *------------------------------------------------------------------------------
 * Upper this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
 *============================================================================
 ****************************************************************************/
#include "drv_comm.h"
#include "reg_base.h"
#include "intrCtrl.h"
#include "stack_common.h"
#include "stack_msgs.h"
#include "app_ltlcom.h"  
#include "app_buff_alloc.h"
#include "drvsignals.h"
#include "fat_fs.h"
#include "fs_type.h"
#include "exif.h"

#include "usb_comm.h"
#include "usb_drv.h"
#include "usb.h"
#include "usb_resource.h"

#include "usb_custom.h"
#include "usbimage_drv.h"
#include "ptp_state.h"


/* global variables */
PTP_Struct			g_USBImage;
static   kal_uint32		g_objecthandles[PTP_MAX_OBJECT_HANDLES];

/* static functions */
static void PTP_Image_DATA_RX_Hdlr(void);
static void PTP_Image_DMA_TX_Hdlr(void);

static void PTP_Copy_From_PTP_String(void *pdest, const kal_uint16 *source_string, kal_uint8 string_num);
static void PTP_Copy_From_PTP_Handle_Array(void *pdest, kal_uint32 *source_array, kal_uint32 array_num);
static void PTP_Date_to_String(void *pdest, FS_DOSDateTime time);

static void PTP_Image_Operation(void);
static void PTP_Cmd_Get_Device_Info(void);
static void PTP_Cmd_Open_Session(void);
static void PTP_Cmd_Close_Session(void);
static void PTP_Cmd_Get_Storage_Ids(void);
static void PTP_Cmd_Get_Storage_Info(void);
static void PTP_Cmd_Get_Num_Objects(void);
static void PTP_Cmd_Get_Object_Handles(void);
static void PTP_Cmd_Get_Object_Info(void);
static void PTP_Cmd_Get_Object(void);
static void PTP_Cmd_Get_Thumb(void);
static void PTP_Cmd_Get_Partial_Object(void);
static void PTP_Get_Object_Hdlr(void);
static void PTP_Send_Object_Hdlr(void);
static void PTP_Cmd_Unknown(void);

/************************************************************
	Parse all messages to USB task for PTP state
*************************************************************/
void PTP_Parse_MMI_Meg(ilm_struct *p_recv_ilm)
{
	usb_image_xml_struct *ptr = (usb_image_xml_struct *)p_recv_ilm->local_para_ptr;

	switch(p_recv_ilm->msg_id)
	{
	case MSG_ID_MMI_USB_DPS_HREQUEST_CONF:
		if(g_USBImage.script_flag & (1<<HREQUEST) != 1<<HREQUEST)
			EXT_ASSERT(0, g_USBImage.script_flag, 0, 0);
		
		g_USBImage.script_flag &= ~(1<<HREQUEST);

		g_USBImage.image_event.ContainerLength = USB_IMAGE_RES_1_PARA;
		g_USBImage.image_event.Code = PTP_OBJECT_REMOVED;
		g_USBImage.image_event.TransactionID = 0xffffffff;
		g_USBImage.image_event.Parameter1 = 	HREQUEST_DPS;
		USB_Image_Send_Intr(&g_USBImage.image_event, USB_IMAGE_RES_1_PARA);
		break;

	case MSG_ID_MMI_USB_DPS_HRESPONSE_CONF:
		if(g_USBImage.script_flag & (1<<HRSPONSE) != 1<<HRSPONSE)
			EXT_ASSERT(0, g_USBImage.script_flag, 0, 0);
		
		g_USBImage.script_flag &= ~(1<<HRSPONSE);

		g_USBImage.image_event.ContainerLength = USB_IMAGE_RES_1_PARA;
		g_USBImage.image_event.Code = PTP_OBJECT_REMOVED;
		g_USBImage.image_event.TransactionID = 0xffffffff;
		g_USBImage.image_event.Parameter1 = 	HRSPONSE_DPS;
		USB_Image_Send_Intr(&g_USBImage.image_event, USB_IMAGE_RES_1_PARA);
		break;

	case MSG_ID_MMI_USB_DPS_DREQUEST_REQ:
		if(g_USBImage.script_flag & (1<<DREQUEST) != 0)
			EXT_ASSERT(0, g_USBImage.script_flag, 0, 0);
		
		g_USBImage.script_flag |= 1<<DREQUEST;
		g_USBImage.send_xml_size = ptr->xml_packet_size;
		
		g_USBImage.image_event.ContainerLength = USB_IMAGE_RES_1_PARA;
		g_USBImage.image_event.Code = PTP_OBJECT_ADDED;
		g_USBImage.image_event.TransactionID = 0xffffffff;
		g_USBImage.image_event.Parameter1 = DREQUEST_DPS;
		USB_Image_Send_Intr(&g_USBImage.image_event, USB_IMAGE_RES_1_PARA);
		
		/* second interrupt packet */
		g_USBImage.image_event.Code = PTP_REQUEST_OBJECT_TRANSFER;
		USB_Image_Send_Intr(&g_USBImage.image_event, USB_IMAGE_RES_1_PARA);
		break;

	case MSG_ID_MMI_USB_DPS_DRESPONSE_REQ:
		/* When DPS response, it cannot have a DPS request */
		if(g_USBImage.script_flag & ((1<<DRSPONSE)|(1<<DREQUEST)) != 0)
			EXT_ASSERT(0, g_USBImage.script_flag, 0, 0);
		
		g_USBImage.script_flag |= 1<<DRSPONSE;
		g_USBImage.send_xml_size = ptr->xml_packet_size;
		
		g_USBImage.image_event.ContainerLength = USB_IMAGE_RES_1_PARA;
		g_USBImage.image_event.Code = PTP_OBJECT_ADDED;
		g_USBImage.image_event.TransactionID = 0xffffffff;
		g_USBImage.image_event.Parameter1 = DRSPONSE_DPS;
		USB_Image_Send_Intr(&g_USBImage.image_event, USB_IMAGE_RES_1_PARA);
		
		/* second interrupt packet */
		g_USBImage.image_event.Code = PTP_REQUEST_OBJECT_TRANSFER;
		USB_Image_Send_Intr(&g_USBImage.image_event, USB_IMAGE_RES_1_PARA);
		break;
		/*  USB receive this message before start job xml */
	case MSG_ID_MMI_USB_START_JOB_IND:
		if(g_USBImage.mmi_start_job == KAL_TRUE)
			ASSERT(0);
		
		g_USBImage.mmi_start_job = KAL_TRUE;
		g_USBImage.image_event.ContainerLength = USB_IMAGE_RES_1_PARA;
		g_USBImage.image_event.Code = PTP_STORE_ADDED;
		g_USBImage.image_event.TransactionID = 0xffffffff;
		g_USBImage.image_event.Parameter1 = PTP_IMAGE_STORAGE_ID;
		USB_Image_Send_Intr(&g_USBImage.image_event, USB_IMAGE_RES_1_PARA);
		break;
		/*  USB receive this message after job done or abortd */
	case MSG_ID_MMI_USB_CLOSE_JOB_IND:
		if(g_USBImage.mmi_start_job == KAL_FALSE)
			ASSERT(0);
		
		g_USBImage.mmi_start_job = KAL_FALSE;		
		g_USBImage.image_event.ContainerLength = USB_IMAGE_RES_1_PARA;
		g_USBImage.image_event.Code = PTP_STORE_REMOVED;
		g_USBImage.image_event.TransactionID = 0xffffffff;
		g_USBImage.image_event.Parameter1 = PTP_ALL_STORAGE_ID;
		USB_Image_Send_Intr(&g_USBImage.image_event, USB_IMAGE_RES_1_PARA);
		if(g_USBImage.current_file_handle != PTP_NO_HANDLE	)
		{
			FS_Close(g_USBImage.current_file_handle);
			g_USBImage.current_file_handle = PTP_NO_HANDLE;
		}
		break;
	default:
		EXT_ASSERT(0, p_recv_ilm->msg_id, (kal_uint32)g_USBImage.state, 0);
		break;
	}
}


void PTP_Parse_USB_Meg(ilm_struct *p_recv_ilm)
{
	switch(p_recv_ilm->msg_id)
	{
	case MSG_ID_USB_PTPIMAGE_DATA_RX_DONE_CONF:
		/* received data from USB_HISR */
		PTP_Image_DATA_RX_Hdlr();
		break;
	case MSG_ID_USB_PTPIMAGE_DMA_TX_DONE_CONF:
		/* transmitted data from DMA callback*/
		PTP_Image_DMA_TX_Hdlr();
		break;
	case MSG_ID_USB_PTPIMAGE_RESET_IND:
		/* reset from reset signal or class specific EP0 RESET command */
		g_USBImage.state = PTP_CMD_RX;
		g_USBImage.host_cancel_flag = KAL_FALSE;
		//USB_Image_BuildRx(&g_USBImage.image_cmd, USB_IMAGE_CONTAINER_LENGTH);
		g_USBImage.send_ptp_reset_ilm = KAL_TRUE;
		break;
	default:
		EXT_ASSERT(0, p_recv_ilm->msg_id, (kal_uint32)g_USBImage.state, 0);
		break;
	}
}


/* receive path state machine */
static void PTP_Image_DATA_RX_Hdlr(void)
{
	switch(g_USBImage.state)
	{
	case PTP_CMD_RX:
		/* parse PTP cmd */
		PTP_Image_Operation();
		break;
	case PTP_RESPONSE:
		g_USBImage.state = PTP_CMD_RX;
		/* Send object (info) handler and send response to host */
		PTP_Send_Object_Hdlr();
		break;
	case PTP_DATA_RX:
	case PTP_DATA_TX:
	default:
		EXT_ASSERT(0, (kal_uint32)g_USBImage.state, 0, 0);
		break;
	}
}

/* transmit path state machine */
static void PTP_Image_DMA_TX_Hdlr(void)
{
	switch(g_USBImage.state)
	{
	/* Send Response */
	case PTP_RESPONSE:
		g_USBImage.state = PTP_CMD_RX;

		if(g_USBImage.error == KAL_FALSE)
		{
			/* Send message to notify mmi that XML packet has sent to host */
			if(g_USBImage.image_cmd.Code == PTP_GET_OBJECT)
			{
				if(g_USBImage.image_cmd.Parameter1 == DREQUEST_DPS)
				{
					USB_Image_Send_Msg(USB_IMAGE_MSG_MMI_DREQUEST_CONF, 0, 0);

					if(g_USBImage.script_flag & (1<<DREQUEST) != 1<<DREQUEST)
						EXT_ASSERT(0, g_USBImage.script_flag, 0, 0);